{"id":979,"date":"2013-01-01T13:46:13","date_gmt":"2013-01-01T13:46:13","guid":{"rendered":"http:\/\/www.bartola.co.uk\/valves\/?p=979"},"modified":"2013-01-01T13:50:55","modified_gmt":"2013-01-01T13:50:55","slug":"4-65a-se-amp-refining-the-46-driver","status":"publish","type":"post","link":"https:\/\/www.bartola.co.uk\/valves\/2013\/01\/01\/4-65a-se-amp-refining-the-46-driver\/","title":{"rendered":"4-65a SE Amp: refining the 46 driver"},"content":{"rendered":"

 <\/p>\n

I did some tests today and looked at minimising distortion of this 46 driver in filament bias<\/a> and found that Va=230V (instead of 184V) to provide best performance:\"20130101-134450.jpg\"<\/a>Filament bias resistor array is now laid out horizontally to improve the dissipation of heat.<\/p>\n

Here is the performance (0.05% at 17Vrms) at maximum drive input from my audio test set:<\/p>\n

\"46<\/a><\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

  I did some tests today and looked at minimising distortion of this 46 driver in filament bias and found that Va=230V (instead of 184V) to provide best performance:Filament bias resistor array is now laid out horizontally to improve the dissipation of heat. Here is the performance (0.05% at 17Vrms) at maximum drive input from … Continue reading “4-65a SE Amp: refining the 46 driver”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[150,12,153,5],"tags":[780,137,778,14,6,44,78,784],"class_list":["post-979","post","type-post","status-publish","format-standard","hentry","category-4-65a-se-amplifier-2","category-dht-valves","category-driver","category-valves","tag-4-65a","tag-4-65a-se-amplifier","tag-778","tag-46-triode-strapped","tag-dht","tag-gyrator","tag-rod-coleman-regulator","tag-thd"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p2r2tK-fN","jetpack_likes_enabled":true,"jetpack-related-posts":[],"_links":{"self":[{"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/posts\/979","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/comments?post=979"}],"version-history":[{"count":1,"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/posts\/979\/revisions"}],"predecessor-version":[{"id":981,"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/posts\/979\/revisions\/981"}],"wp:attachment":[{"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/media?parent=979"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/categories?post=979"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bartola.co.uk\/valves\/wp-json\/wp\/v2\/tags?post=979"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}